Talakua, Calvin, and Centhya Victorin Maitimu. “Efektifitas Media Pembelajaran Berbasis Smartphone Untuk Mengembangkan Sikap Peduli Lingkungan Peserta Didik : (The Effectiveness of Smartphone Based Learning Media to Develop Attitudes Caring for Students ’Environmental)”. BIODIK 6, no. 3 (December 4, 2020): 392-401. Accessed October 20, 2021. https://online-journal.unja.ac.id/biodik/article/view/10006.